Unlock instant, AI-driven research and patent intelligence for your innovation.

Overcurrent protection circuit comprising multiple groups of loop load

An overcurrent protection circuit and overcurrent technology, applied in the field of TV, can solve the problems of difficulty in mass production and application, poor protection performance/price ratio, burning color TV, etc., to achieve the effects of multiple protection functions, low cost, and stable and reliable overload protection.

Inactive Publication Date: 2010-11-17
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the disadvantage of poor performance / price ratio of overload protection in the existing technology, it is difficult to put into mass production and application
If the color TV is not equipped with a protection circuit, once a fault occurs, a larger fault will occur in a chain, especially the phenomenon of burning the color TV

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Overcurrent protection circuit comprising multiple groups of loop load
  • Overcurrent protection circuit comprising multiple groups of loop load
  • Overcurrent protection circuit comprising multiple groups of loop load

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The best way to realize this innovation will be described in detail below in conjunction with the accompanying drawings. It is no longer necessary to repeat what has been mentioned above or in combination with the existing technology or should be changed in the same way.

[0010] Figure 4 Example: [AC main switch K with relays may or may not be used]. The special-shaped composite tube and its related circuits are composed of the preamplifier tube A44 and the switch tube VK. Through the positive feedback branch formed by the resistor R68 and the capacitor C68, it is connected to the base of the amplifier tube A44 and the collector of the switch tube VK. Toggle advantages. Reduce the time of the switching tube VK on / off process passing through the amplification area, with the performance of a voltage comparator or a Schmitt trigger, and can be directly connected to the circuit for indirect sampling and detection of grid voltage, and can realize remote control or grid o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an over-current protective circuit consisting of a plurality of groups of loop loads. The over-current protective circuit comprises an over-current detection source circuit and an exception shutdown self-locking circuit related to the overcurrent detection source circuit, and is characterized in that the over-current detection source circuit comprises an over-current sampling detection source resistor (Rf); the over-current sampling detection source resistor (Rf) is adjacently connected with a loop public end 'earth' as an over-current sampling detection source. The over-current protective circuit plays dual purpose performance of the circuit, reduces the number of elements, tries to minimize the cost, and has the most complete and reliable protection functions, sothat the performance / price ratio of the product is improved.

Description

[0001] This application is a divisional application with the filing date of November 1, 2003, the application number of 2003101108602, and the title of "Color TV Overload Shutdown Device". technical field [0002] The invention mainly relates to the field of television technology. Background technique [0003] The prior art color TV overload protection circuit has a relatively single protection function. If multiple protection functions are required, it must be composed of multiple single protection circuits. The prior art protection circuit is relatively complicated, and it is often necessary to use the internal X-ray function of the integrated block or a microcontroller. CPU OPT customizes the matching of pins related to the overload function, which is also easy to be mis-controlled or out of control, and the cost of each protection circuit is high. Wherein, in the prior art line output stage overcurrent protection, the overcurrent sampling detection resistor is connected ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/08H02H3/26H02H7/20H04N5/63H04N3/20
Inventor 戴俊
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD